The group did everything possible to keep their arrival on a 17-seater Lear jet a secret.

After landing, the band headed to a luxury accommodation six miles away at Cawdor Castle, near Nairn.

"They tried their best to keep their visit low-key. Mark wants to keep this wedding very private and away from public eyes. However, it is the worst-kept secret in the world," the Sun quoted a source as saying.

Owen will marry 33-year-old Emma Ferguson at Cawdor Church of Scotland.